<!DOCTYPE html>
<link rel="stylesheet" href="test-common.css">
<style type="text/css">
  @counter-style a {
    system: fixed;
    symbols: \25F0  \25F1  \25F2  \25F3;
    suffix: ':';
  }
  @counter-style b {
    system: fixed -1;
    symbols: \25F4  \25F5  \25F6  \25F7;
    suffix: ':';
  }
</style>
<ol start="-2" style="list-style-type: a">
  <li><li><li><li><li>
  <li><li><li><li><li>
</ol>
<ol start="-2" style="list-style-type: b">
  <li><li><li><li><li>
  <li><li><li><li><li>
</ol>
